| Age | Commit message (Expand) | Author |
| 2025-03-28 | Optimize popcount functions with ARM Neon intrinsics. | Nathan Bossart |
| 2025-03-28 | Rename TRY_POPCNT_FAST to TRY_POPCNT_X86_64. | Nathan Bossart |
| 2025-01-01 | Update copyright for 2025 | Bruce Momjian |
| 2024-12-04 | Use <stdint.h> and <inttypes.h> for c.h integers. | Thomas Munro |
| 2024-04-07 | Optimize visibilitymap_count() with AVX-512 instructions. | Nathan Bossart |
| 2024-04-07 | Optimize pg_popcount() with AVX-512 instructions. | Nathan Bossart |
| 2024-04-03 | Inline pg_popcount() for small buffers. | Nathan Bossart |
| 2024-04-02 | Refactor code for setting pg_popcount* function pointers. | Nathan Bossart |
| 2024-03-19 | Inline pg_popcount{32,64} into pg_popcount(). | Nathan Bossart |
| 2024-01-04 | Update copyright for 2024 | Bruce Momjian |
| 2023-01-02 | Update copyright for 2023 | Bruce Momjian |
| 2022-01-08 | Update copyright for 2022 | Bruce Momjian |
| 2021-08-16 | Use direct function calls for pg_popcount{32,64} on non-x86 platforms | John Naylor |
| 2021-08-09 | Add POPCNT support for MSVC x86_64 builds | David Rowley |
| 2021-01-02 | Update copyright for 2021 | Bruce Momjian |
| 2020-01-01 | Update copyrights for 2020 | Bruce Momjian |
| 2019-06-14 | Fix typos and inconsistencies in code comments | Michael Paquier |
| 2019-05-22 | Initial pgindent run for v12. | Tom Lane |
| 2019-02-16 | Make use of compiler builtins and/or assembly for CLZ, CTZ, POPCNT. | Tom Lane |
| 2019-02-15 | Revert attempts to use POPCNT etc instructions | Alvaro Herrera |
| 2019-02-15 | Fix compiler builtin usage in new pg_bitutils.c | Alvaro Herrera |
| 2019-02-13 | Fix portability issues in pg_bitutils | Alvaro Herrera |
| 2019-02-13 | Add basic support for using the POPCNT and SSE4.2s LZCNT opcodes | Alvaro Herrera |